Question: What is the name of a market structure that starts with the letter o.
Paraphrase: What is the title of a advertise structure that begins with the letter o.
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q877707 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'o')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: Oligopsony, Oligopsony, oligopoly, oligopoly